Social media has swiftly become a tool to let others know of one’s safety during an emergency. And that’s exactly what one victim of the Mesa, Arizona shooting used Snapchat for: After being shot, he uploaded a picture, then sought help for his wound.

Isaac Martinez is a 20-year-old student at Mesa’s East Valley
Institute of Technology, and was heading into Bistro 13 for a
culinary class on Wednesday morning when a man “came in and
demanded my keys for a getaway car,” he wrote on Facebook.

The man, later identified as 41-year-old Ryan Elliot Giroux, is
accused of
killing one and injuring two others at the Tri-City Inn, a
motel across the street from the restaurant. He then fled the
scene to Bistro 13, looking for a getaway car.

“Of course i said no, and next was him pulling out a gun and
cocking it,” Martinez wrote. “Soon as i saw it i started
stepping back. And yelled for everyone to step back and get down.
Next thing i knew i was hitting the ground, got up as fast as i
fell, and ran out the back exit.”

After that, Martinez “noticed the cops and fire trucks down
the street,” he said, and ran across West Main Street to get
help from the paramedics at the first shooting scene. He was then
transported to the hospital, .Mesa Police Department Detective
Estaban Flores told reporters Wednesday.

The 20-year-old student was the only one injured at that
location. Giroux, a man with a criminal record and alleged
connections with neo-Nazi and white supremacist groups,
injured two other men at two different locations before he was
caught during a nearly four-hour manhunt Wednesday afternoon.

“I have no complicated injuries and should heal fine. I had a
bullet hit me from behind and go through my shoulder and out my
coller [sic] area,” Martinez wrote. “Any higher or lower
it coulda hit a[n] artery, or shatter[ed] my shoulder
blade.”